Container



E. SCOFIELD June 16, 1931.

CONTAINER Filed NOV. 50. 1927 Patented June 16, 1931 UNITED STATES PATENT OFFICE EDGAR SOOFIELD, OF NEW' YORK, N. Y., ASIGNOR T0 ANCHOR CAP CLOS'URE COR- PORATION, F LONG- ISLAND CITY, NEW 'YORK, A CORPORATION OF NEW YORK CONTAINER Application led November 30, 1927. Serial No. 236,603.

The present invention relates to containers and more particularly to paper or fibrous containers with a metallic cap attached thereto.

Paper cartons have been used extensively l for packing plastic material such as ice cream and for distribution of liquids such as milk, cream, sodas and the like. Considerable dificulty has been encountered in the use'of these due to the fact-that the upper part of the cartons becomes weakened or deformed during the filling operations and the covers do not t properly. They are diicult to apply and are not liquid-tight when applied. In making the carton suiiciently heavy to overcome, to any extent, these diificultiesthe amount of material required is increased greatly and the cost of the carton becomes extremely high and practically prohibitive.

Attem ts have been made to adapt thecon- 2o tainers or screw caps by forming screw threads in the fibrous material while it is in a semi-plastic condition. Attemptshave also been made to apply screw bands to the containers while in a plastic state but such application weakens the container at its upper part and also thins it considerably. In either case the application or removal ofthe screw cap is likely to shear the cartonadjacent the threads.A In addition the metal bands 3o frequently become looser and slip from the cartons. y

The present invention overcomes these difculties by providing a metallic collar for strengthening the upper part of the carton and by securely attaching the collar to the carton without weakening it at any point. The collar preferably has suitable screw threads or other engaging means for the accommodation of metal caps. The collars may 40 and preferably are ap lied to the cartons in their completed state, t at is, after the fibrous material has become hardened and is waxed.

An obj ect of the invention is to improve the present paper or fibrous cartons used in carrying liquids and plastic products.

Another object is to provide a paper or fibrous'container reinforced at its upper end to which a metallic cap may be readily applied.

.50 Another object of the invention is to prevent deformation of the upper ends of fibrous containers during filling thereby facilitate .the application of caps and covers thereto.

A further object of the invention is to provide an inexpensive paper carton to which a metallic screw cap may be readily applied.

Other and further objects of the invention will be obviousupon an understanding of the illustrated embodiment about to be described or vwill be evident from the following description; and various advantages not referred to herein will occur to one skilled in the art upon employment of the linvention in practice. I

A preferred embodiment of the invention has been chosen for purposes of illustration and description and is shown in theaccompanying drawings, in which Fig. 1 is a view of the parts in unassembled relation with the cap and collar shown in section;

Fig. 2 is a partial sectional view of the collar resting upon the container before attachment thereto;

Fig. 3 is a fragmentary sectional view show- 75 ing the collar attached to a container; and

Fig. 4 is an elevational view of the upper part of the container partly in section showing the completed package.

Referring to the drawings, there is shown 8 a container 1 preferably formed of fibrous material such as paper and the like in the usual manner. The material may be a single piece of cardboard or several thicknesses of paper suitably attached to each other. The material may be waxed, if desired. Such containers have been and are now used for liquids and plastic material generally with a shown inr Fi 2 without deformation of the container. referably the screw threads on the collar make noindentation whatever in the container but telescope loosely thereabout. In this way there '1s no weakening whatever of the upper part'of the container.

The inwardly extending flange 4 is rolled downwardly and inwardly toward the wall of the container so that the free edge of the collar engages the wall of the container slightly below the edge thereof and rolls into an interlocking relation as shown in Fig. 3. The entire grip of the collar upon the container is at the'upper peripheral edge thereof. It will be noted that the free edge of the collar presses the wall of the container tightly. against the cylindrical art of the collar. In addition the interlocke part or free edge of the container is pressed tightlybetween the rolled portion 7 and the cylindrical part Y of the collar. In this way, a very firm grip is attained while permitting the lower part of the collar to lit loosely upon the container. In addition, the free raw edge of the collar is rolled downward, outwardly and upwardly tofy interlock with the free edge of the bre container and to substantially conceal the raw edge of the metal. This eliminates any tendency for this uncoated portion of the metal to corrode from contact with the contents of the container. The collar is preferably applied to a fullyformed container with the material thereof in its final hardened or waxed condition. Operations thereupon in such a. erate with the corresponding screw threads 6 thereof where the collar is applied in the manner set forth. Hencethe completed container is fully capable of withstanding any shearing stresses that ma be applied, even when the (fzontainer is ma e much thinner than heretoore.

A screw cap 8 is provided of any suitable form, here shown, having a 'cover portion 9 and a depending cylindrical skirt 10 having the screw threads 11 therein adapted to cooperate with the corresponding screw threads 6 on the collar 2. The upper part of the skirt is knurled or corrugated as shown at 8 to strengthen this part-of the cap and also to fa-v cilitate manual gripping thereof. The bottom of the'cap is formed with a rolled edge 14 which strengthens this portion of the cap and prevents contact with the raw edge thereof. The length of the skirt of the cap is such that the rolled edge 14 abuts against the edge 5 of the collar to limit the downward, telescoping movement of the cap about the collar and to provide a resilient engagement therebetween, whereby a irm locking relation is obtained between the two. This facilitates the application of the cap and the removal thereof and minimizes adherence to the collar.

It will be seen that the present invention provides an inexpensive container to which metallic caps may be readily applied without danger of accidental removal thereof. The containers or cartons may be made of thinner material due to the fact that the metallic collar reenforces the upper edge and prevents such as ice cream. It will retain its proper shape so that a screw cap may be readily applied thereto. The attachment of the collar to the container is such that the container is not weakened in any way and the material of the upper part thereof isnot reduced in thickness. The rolled edge on the cap prevents coniact with the raw edge thereof and in addition provides a springy engagement between the collar and the screw cap by means of which a more perfect attachment is attained. Further, the container is stron and durable in character and fully capab e of vwithstanding the rough usage to which it may be subjected.

As various changes may be made in the aboveembodiment without departing from the'spirit of the invention, it is to be understood that all matter herein is to be interpreted aspillustrative andnot in a limited sense. It is to be understood also that the term Ipaper used herein is intended to include any form of fibrous material.

Having thus described my invention, I claim:

1. In a device of the class described, the combination of a paper carton, a threaded metal collar adapted to receive a screw cap telescoped about the upper end of said carton, said collar having a continuous u per edge secured in position byan interloc ing inturned folding engagement of the upper edge of the collar with the upper periphery of the carton whereby only the upper periph- 'eral edge of the carton is deformed in the application of the collar to the container and the raw edge of the 'metal collar is concealed.

2.' In a device of the class described, the combination of a collar adapted to be attached to the end of a container, an inturned iiange at the upper'part of the collar rolled into continuous interlocking engagement with the upper peripheral edge of the container, the lower edge of the colla-r being rolled to strengthen same and to form an abutment for a screw cap and a screw capvattached to said collar, said screw cap having a rolled lower edge engaging the rolled lower edge of the collar and a knurled upper part.

3. In a device of the class described, the combination of a paper carton and a threaded collar attached to the upper end of said car` ton without rupturing the side wall thereof, the upper part of said' collar having a continuous edge rolled downwardly and inwardly into interfolded locking engagement with the upper peripheral edge of the carton to hold same in position and to protect the raw edge of the metal, thereby to prevent rusting.

4. In a device of the class described, a paper carton, a threaded collar attached to the upper end of said carton without rupturing of the side wall thereof, the upper part of said collar having a continuous edge rolled downwardly and inwardly into continuous interfolded engagement with the upper periphery of the carton to hold same in position, the lower edge of said collar being rolled to strengthen same and to form an abutment, and a screwcap threaded into engagement with said collar with the lower edge of the cap in engagement with the rolled edge of the collar.

5. In a paper carton, the combination of a fibre carton and a threaded metal collar telescoped about the upper end of said carton, said collar having a continuous upper ed e rolled inwardly and downwardly into loc ing engagement with the upper end of the carton, the raw edge of the metal of the collar being substantially concealed and to protect against rust by the interlocking engagement with the carton, the remaining portions of the collar being telescoped loosely about the container.

6. In a device of the class described, the combination of a bre carton, a threaded metal collar having a narrow inturned ilange having a continuous free edge, said flange being rolled downwardly and inwardly to interlock with the free edge of the carton and to conceal the raw edge of the metal Awithout rupturing the wall of the fibrous container.

7. A. package comprising a carton, a threaded cylindrical collar'portion adapted to. be telescoped about the open end of the carton with a continuous inturned edge extending over thefree edge of the carton, said inturned edge being rolled downwardly and outwardly into interfolded locking engagement with the carton without rupturing the fibrous carton, and a sheet metal screw cap secured to said carton by being threaded into engagement with said collar.

8. In a device of the class described, the

combination of a paper container, a metallic collar telescoped about the upper end thereof, the upper edge of said collar bein continuous and rolled into continous fol ed reend of said carton having a continuous upper edge, said continuous upper edge of the collar bein folded inwardly, downwardly and outwar y to grip firmly the upper periphery of the carton on the inner wall thereof to retain the collar in position and to protect the raw edge of the metal against rust, the lower edge of the collar being rolled outwardly and upwardly to conceal the raw edge thereof.

l0. In a paper carton, the combination of a bre container, a threaded metal collar telescoped about the upper end of said container, said collar having a continuous upper edge rolled inwardly and downwardly into continuous locking engagement with the inner wall at the upper end of the container, the raw edge of the metal of the collar being concealed and protected against rust by the interlocking engagement with the container, the lower edge of said collar being rolled outwardly and upwardly to protect the raw edge of the metal and to form a stop for a closure cap, and a screw cap mounted upon said collar closing the container and engaging the rolled edge on the collar as an abutment.

11. In a device of the class described, the combination of a fibre carton, a threaded metal collar having a narrow inturned flange with a continuous free edge, said free edge being rolled downwardly and outwardly into contact with the inner side wall of the carton to conceal the raw edge thereof and to interlock with the free edge of the carton to protect the raw edge of the metal Without rupturing the walls of the fibre container, the lower edge of said collar being beaded to form an abutment for a closure cap, and a screw cap applied to said collar and abutting said beaded edge.

' `EDGAR SCOFIELD. 

